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Whitepunk [10]
3 years ago
12

A) Expand and simplify. 7(x - 2) - 2(x - 1) b) Factorise fully. 8x2 + 6x

Mathematics
1 answer:
cluponka [151]3 years ago
5 0

Answer:

a).  5x - 12   b). 2x(4x + 3)

Step-by-step explanation:

a). 7(x - 2) - 2(x - 1)

= 7x - 14 - 2x + 2

= 5x - 12

b). 8x² + 6x

2x(4x + 3)

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Thanks to all those who support my question!
Mazyrski [523]

Answer:

no, because intergers are negative. they will never be able to be greater

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Can you help me with this one ? 
saveliy_v [14]
<span>(2x + 1)(x + 3) = 2x^2 + 6x + x + 3 = 2x^2 + 7x + 3    A.</span>
6 0
3 years ago
Read 2 more answers
ou decide to bake some cakes. You need 150 g of flour for 12 cakes. How much flour do you need for 30 cakes? g
Brilliant_brown [7]
Short answer: 375 grams

Remark
You only need to set up a direct proportion

Givens
flour for 12 cakes = 150 grams
Number of cakes initially = 12
Amount of flouer for 30 cakes = x
Number of cakes = 30

Proportion
amount flour for 12 cakes / 12 cakes  = x / 30

Sub and solve
150 grams / 12 cakes = x / 30 cakes  Cross multiply
150 * 30 = 12 *x                                  Multiply the left side. 
4500 = 12 x                                         Divide both sides by 12
4500/12 = x
375 grams for 30 cakes. <<<<< Answer
5 0
3 years ago
I can't figure out how to do this problem. Could somebody help me?
Verizon [17]

start by plugging in the value you already have, in this case, 5 for y.

-4x-3(5)=17

-4x-15=17

-4x=32

x=-8

however, since a is a+1, a would be 7 (making x 8)

also plz tell me if i read this wrong and it’s actually 1,5 rather than a+1 and 5 cause if i did i’m so sorry lol.

8 0
3 years ago
Which is the better deal?
Reptile [31]

Answer:

The better deal is 10 cans of soda for $5.50

Step-by-step explanation:

  • 6 cans of soda for $3.60 means each can of soda is worth .60 cents
  • 4 cans of soda for $2.36 means each can of soda is worth .59 cents
  • 10 cans of soda for $5.50 means each can of soda is worth .55 cents

Therefore, 10 cans of soda for $5.50 is the best deal because you are getting the most cans of soda for the cheapest amount of money.

Hope this helped!

7 0
3 years ago
Read 2 more answers
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